Batboard

I have an HT750 VHF that emits a steady beep to be best described. I get power up double beep and light, but then goes into steady tone which sounds a little garbled. I can read code plug but get a write error when trying to write to radio. Radio does not TX. A little background. Radio was on my side no adverse problems just started beep. Tried new batt. and reseating ribbon cable. Thanks in advance for your help.

Thanks,
David

No idea if it's the same thing, but...

I've had this happen on my SP50 and Radius M216. It was caused by a VCO lock error (too far out of band) on my M216, and by a corrupt codeplug on the SP50.

Both were fixed by changing the frequencies and dumping the codeplug back into the radio.

-Mike

What is the error that you are getting when writing to the radio?

Jay

The error message is: Write Device Failed The radio gives two high tone and goes silent. Once I click ok it goes back into steady tone.

Haloncloud

I think the steady tone you are getting is probably because the radio failed it's power up "self test" routine. It sounds to me like maybe you have a uprocessor-type issue. If it won't write a codeplug, and if it is in fact not passing the power up tests, then I would say that you have a pretty critical hardware failure somewhere in the heart of the radio. I know that we don't attempt to replace any of the chips on the Motorola boards, but maybe someone else here, like Monty, does. If you can afford it, I would say send it to the depot, and have them fix it. Motorola's flat rate repair pricing for the HT 750 is $215.

Just a though get another HT750 read it, then write that info to the radio giving problems.

Adam

HI:

Although I am down to componet level repair
on these radios, its not feasible even for me
to replace any of the VLSI chips !

I have done a few, and that was enough for me.

I am more than happy to take a look at your
radio ( as time permits ) however, even I now
have a pretty fair back log 2 ~ 3 weeks minimum.

So, Motorola may be your best bet ! , I can definately
vouch for them, and they have resources far exceeeding
what I will ever have.

And they only take a week or Two.....If you need a
depot form, I can fax you one on request..

MS